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Robert I, duke of Normandy

(Encyclopedia)Robert I (Robert the Magnificent), d. 1035, duke of Normandy (1027–35); father of William the Conqueror. He is often identified with the legendary Robert the Devil. He aided King Henry I of France a...

Nicholas I, czar of Russia

(Encyclopedia)Nicholas I, 1796–1855, czar of Russia (1825–55), third son of Paul I. His brother and predecessor, Alexander I, died childless (1825). Constantine, Paul's second son, was next in succession but ha...

Peter I, czar of Russia

(Encyclopedia)Peter I or Peter the Great, 1672–1725, czar of Russia (1682–1725), major figure in the development of imperial Russia. Peter's personal traits ranged from bestial cruelty and vice to the most ...

William I, prince of Orange

(Encyclopedia)William I, prince of Orange: see William the Silent. ...

Dreyer, Johan Ludwig Emil

(Encyclopedia)Dreyer, Johan Ludwig Emil yōˈhän lo͝otˈvĭkh āˈmēl [key], 1852–1926, Danish astronomer, b. Copenhagen, who worked in Great Britain. He was assistant astronomer at the earl of Rosse's observa...

Northeast Boundary Dispute

(Encyclopedia)Northeast Boundary Dispute, controversy between the United States and Great Britain concerning the Maine–New Brunswick boundary. The treaty of 1783 ending the American Revolution had described the n...

O'Connor, Rory

(Encyclopedia)O'Connor, Rory or Roderick, 1116?–1198, last high king of Ireland. He became king of Connacht in 1156 and seized the high kingship in 1166. His ascendancy was brief, however, for his quarrel with De...

Louis IV, French king

(Encyclopedia)Louis IV or Louis d'Outremer lwē do͞otrəmĕrˈ [key] [Fr.,=Louis from overseas], 921–54, French king (936–54), son of King Charles III (Charles the Simple). He spent his youth as an exile in En...

Getty, Jean Paul

(Encyclopedia)Getty, Jean Paul, 1892–1976, American business executive, one of the richest men in the world during his life, b. Minneapolis, Minn. He inherited his father's oil business, George F. Getty, Inc., be...

Khosrow I

(Encyclopedia)Khosrow I (Khosrow Anüshirvan) khŏsrōˈ; ăno͞oshĭrvänˈ [key], d. 579, king of Persia (531–79), greatest of the Sassanid, or Sassanian, monarchs. He is also known as Chosroes I or Khosru I. H...